aboutsummaryrefslogtreecommitdiffstats
path: root/arch/m68knommu/platform/520x/config.c
blob: 855fc6a79d72fc1b00af368b65002b27d8eca0f0 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/***************************************************************************/

/*
 *  linux/arch/m68knommu/platform/520x/config.c
 *
 *  Copyright (C) 2005,      Freescale (www.freescale.com)
 *  Copyright (C) 2005,      Intec Automation (mike@steroidmicros.com)
 *  Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
 *  Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>

/***************************************************************************/

void coldfire_reset(void);

/***************************************************************************/

static struct mcf_platform_uart m520x_uart_platform[] = {
	{
		.mapbase	= MCF_MBAR + MCFUART_BASE1,
		.irq		= MCFINT_VECBASE + MCFINT_UART0,
	},
	{
		.mapbase 	= MCF_MBAR + MCFUART_BASE2,
		.irq		= MCFINT_VECBASE + MCFINT_UART1,
	},
	{
		.mapbase 	= MCF_MBAR + MCFUART_BASE3,
		.irq		= MCFINT_VECBASE + MCFINT_UART2,
	},
	{ },
};

static struct platform_device m520x_uart = {
	.name			= "mcfuart",
	.id			= 0,
	.dev.platform_data	= m520x_uart_platform,
};

static struct resource m520x_fec_resources[] = {
	{
		.start		= MCF_MBAR + 0x30000,
		.end		= MCF_MBAR + 0x30000 + 0x7ff,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= 64 + 36,
		.end		= 64 + 36,
		.flags		= IORESOURCE_IRQ,
	},
	{
		.start		= 64 + 40,
		.end		= 64 + 40,
		.flags		= IORESOURCE_IRQ,
	},
	{
		.start		= 64 + 42,
		.end		= 64 + 42,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device m520x_fec = {
	.name			= "fec",
	.id			= 0,
	.num_resources		= ARRAY_SIZE(m520x_fec_resources),
	.resource		= m520x_fec_resources,
};

static struct platform_device *m520x_devices[] __initdata = {
	&m520x_uart,
	&m520x_fec,
};

/***************************************************************************/

#define	INTC0	(MCF_MBAR + MCFICM_INTC0)

static void __init m520x_uart_init_line(int line, int irq)
{
	u32 imr;
	u16 par;
	u8 par2;

	writeb(0x03, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);

	imr = readl(INTC0 + MCFINTC_IMRL);
	imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
	writel(imr, INTC0 + MCFINTC_IMRL);

	switch (line) {
	case 0:
		par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
		par |= MCF_GPIO_PAR_UART_PAR_UTXD0 |
		       MCF_GPIO_PAR_UART_PAR_URXD0;
		writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
		break;
	case 1:
		par = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
		par |= MCF_GPIO_PAR_UART_PAR_UTXD1 |
		       MCF_GPIO_PAR_UART_PAR_URXD1;
		writew(par, MCF_IPSBAR + MCF_GPIO_PAR_UART);
		break;
	case 2:
		par2 = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
		par2 &= ~0x0F;
		par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 |
			MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
		writeb(par2, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
		break;
	}
}

static void __init m520x_uarts_init(void)
{
	const int nrlines = ARRAY_SIZE(m520x_uart_platform);
	int line;

	for (line = 0; (line < nrlines); line++)
		m520x_uart_init_line(line, m520x_uart_platform[line].irq);
}

/***************************************************************************/

static void __init m520x_fec_init(void)
{
	u32 imr;
	u8 v;

	/* Unmask FEC interrupts at ColdFire interrupt controller */
	writeb(0x4, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 36);
	writeb(0x4, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 40);
	writeb(0x4, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + 42);

	imr = readl(MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);
	imr &= ~0x0001FFF0;
	writel(imr, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH);

	/* Set multi-function pins to ethernet mode */
	v = readb(MCF_IPSBAR + MCF_GPIO_PAR_FEC);
	writeb(v | 0xf0, MCF_IPSBAR + MCF_GPIO_PAR_FEC);

	v = readb(MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
	writeb(v | 0x0f, MCF_IPSBAR + MCF_GPIO_PAR_FECI2C);
}

/***************************************************************************/

/*
 *  Program the vector to be an auto-vectored.
 */

void mcf_autovector(unsigned int vec)
{
    /* Everything is auto-vectored on the 520x devices */
}

/***************************************************************************/

void __init config_BSP(char *commandp, int size)
{
	mach_reset = coldfire_reset;
	m520x_uarts_init();
	m520x_fec_init();
}

/***************************************************************************/

static int __init init_BSP(void)
{
	platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices));
	return 0;
}

arch_initcall(init_BSP);

/***************************************************************************/